[GitHub] [nuttx] xiaoxiang781216 commented on a diff in pull request #7724: Add Hexadecimal parsing for strtof

[GitBox]

xiaoxiang781216 commented on code in PR #7724:
URL: https://github.com/apache/nuttx/pull/7724#discussion_r1034897966


##########
libs/libc/stdlib/lib_strtof.c:
##########
@@ -228,27 +294,53 @@ float strtof(FAR const char *str, FAR char **endptr)
           p++;
         }
 
-      if (negative)
+      if (flag_sixt == 1)
         {
-          exponent -= n;
+          if (negative)
+            {
+              exponent = (exponent *4) - n;

Review Comment:
   why need modify



##########
libs/libc/stdlib/lib_strtof.c:
##########
@@ -228,27 +294,53 @@ float strtof(FAR const char *str, FAR char **endptr)
           p++;
         }
 
-      if (negative)
+      if (flag_sixt == 1)
         {
-          exponent -= n;
+          if (negative)
+            {
+              exponent = (exponent *4) - n;
+            }
+          else
+            {
+              exponent = (exponent *4) + n;
+            }
         }
       else
         {
-          exponent += n;
+          if (negative)
+            {
+              exponent -= n;
+            }
+          else
+            {
+              exponent += n;
+            }
         }
     }
 
   if (exponent < __FLT_MIN_EXP__ ||
       exponent > __FLT_MAX_EXP__)
     {
       set_errno(ERANGE);
-      number = infinite;
+      if (exponent < __FLT_MIN_EXP__)
+        {
+          number = divzero;

Review Comment:
   why need



-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org

For queries about this service, please contact Infrastructure at:
us...@infra.apache.org